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Go Back   SailNet Community > Boat Builders Row > P30 > Stuck valves
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Thread: Stuck valves Reply to Thread
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Topic Review (Newest First)
04-24-2013 12:00 AM
sww914
Re: Stuck valves

Quote:
Originally Posted by transmitterdan View Post
Some turbos and superchargers can be damaged by synthetic oil as it has different cooling and surface tension properties among other things. Best to use the oil recommended by the engine manufacturer unless you can afford to live with the results of experimenting.
Told me!
Goody for you.
04-23-2013 11:36 PM
transmitterdan
Re: Stuck valves

Quote:
Originally Posted by sww914 View Post
You might try running synthetic oil in it once and see how it does. Some old engines don't like it and some do. It doesn't get gummy like dino oil. That's the only thing that I'll use on something with a turbo because it doesn't turn to carbon in the super hot turbo when you shut it down and the cooling liquid stops circulating.
Some turbos and superchargers can be damaged by synthetic oil as it has different cooling and surface tension properties among other things. Best to use the oil recommended by the engine manufacturer unless you can afford to live with the results of experimenting.
04-23-2013 07:59 PM
sww914
Re: Stuck valves

You might try running synthetic oil in it once and see how it does. Some old engines don't like it and some do. It doesn't get gummy like dino oil. That's the only thing that I'll use on something with a turbo because it doesn't turn to carbon in the super hot turbo when you shut it down and the cooling liquid stops circulating.
04-23-2013 07:24 PM
Midnight Mist
Re: Stuck valves

Want to thank everyone for thier advice. After soaking in mystery oil for a few days the A-4 came to life. It runs pretty smooth. Haven't run more than 2 minutes yet, pump problems. Talked to Moyer Marine, have to prime the water pump. Looks like Midnight Mist will be on the water around Memorial Day
04-13-2013 06:09 PM
Midnight Mist
Re: Stuck valves

Thanks BubbleheadMd, I was aware of that fact and have given the motor several spins witha wrench. Did that about an hour ago and I now have compression in all four cylinders. All valves working properly. Will put everything together tomorrow and see if it fires up. Can't wait to get on the water!
04-12-2013 01:53 PM
BubbleheadMd
Re: Stuck valves

Quote:
Originally Posted by Midnight Mist View Post
Thanks CalebD, I might try that. Still have one valve stuck. And yes it is an A-4 in a P30. Been sitting on land for a while now. Hoping to get in the water soon.
It's always good to hear of another P30 being saved, and sailed. They are fantastic, dual-purpose boats.
04-12-2013 08:19 AM
Dog Ship
Re: Stuck valves

All good advice, except for one thing.
Once you have soaked everything in oil for a while don't try to start your engine. Do take a large wrench and start working the crankshaft back and forth by hand until you can rotate it at least 4 times without any conflict of the internal parts.
If you try to start it up you could bend a valve or one could hit a piston.
By working the engine free by hand you will feel any binding of the parts before they do more damage.
04-11-2013 09:23 PM
CalebD
Re: Stuck valves

If you ever need help with your A4 you should definitely check out the Moyer Marine forums: Moyer Marine Atomic 4 Community - Home of the Afourians - Powered by vBulletin
The membership over there is extremely helpful and would give you suggestions on how to deal with your stuck valve if you want.
04-11-2013 06:46 PM
Midnight Mist
Re: Stuck valves

Thanks CalebD, I might try that. Still have one valve stuck. And yes it is an A-4 in a P30. Been sitting on land for a while now. Hoping to get in the water soon.
04-11-2013 12:28 AM
CalebD
Re: Stuck valves

Apparently a 50/50 mix of Acetone and automatic transmission fluid (atf) can work even better.
I'd try the MMO first. If that doesn't work you can try the acetone/atf mix.
A4 in a P30?
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